(EnergyAsia, November 10 2011, Thursday) — Australia’s BHP Billiton Ltd and Indonesia’s Adaro will soon begin jointly developing a coal mine as part of their US$1.34 billion Indomet project in Kalimantan on the Indonesian island of Borneo.The Haju coal mine, located 220km northwest of Balikpapan port, is slated to start up with an annual production…